Home / 156,634,122.91-216,142,437.09-90,558,880.10

Finding the Fourth Proportional to 156,634,122.91, 216,142,437.09 and 90,558,880.10

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Solution

The fourth proportional to 156,634,122.91, 216,142,437.09 and 90,558,880.10 is: 124,963,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,634,122.91 : 216,142,437.09 = 90,558,880.10 : x
  2. Step 2: Convert to fraction form
    156,634,122.91/216,142,437.09 = 90,558,880.10/x
  3. Step 3: Cross multiply
    156,634,122.91x = 216,142,437.09 × 90,558,880.10
  4. Step 4: Simplify right side
    156,634,122.91x = 19,573,617,043,421,596
  5. Step 5: Solve for x
    x = 19,573,617,043,421,596/156,634,122.91
  6. Step 6: Final answer
    x = 124,963,939.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.