Home / 118,931.10-164,132.51-78,574.07

Finding the Fourth Proportional to 118,931.10, 164,132.51 and 78,574.07

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Solution

The fourth proportional to 118,931.10, 164,132.51 and 78,574.07 is: 108,437.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,931.10 : 164,132.51 = 78,574.07 : x
  2. Step 2: Convert to fraction form
    118,931.10/164,132.51 = 78,574.07/x
  3. Step 3: Cross multiply
    118,931.10x = 164,132.51 × 78,574.07
  4. Step 4: Simplify right side
    118,931.10x = 12,896,559,330.02
  5. Step 5: Solve for x
    x = 12,896,559,330.02/118,931.10
  6. Step 6: Final answer
    x = 108,437.23

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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.