Home / 153,700.50-212,281.65-103,312.02

Finding the Fourth Proportional to 153,700.50, 212,281.65 and 103,312.02

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Solution

The fourth proportional to 153,700.50, 212,281.65 and 103,312.02 is: 142,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,700.50 : 212,281.65 = 103,312.02 : x
  2. Step 2: Convert to fraction form
    153,700.50/212,281.65 = 103,312.02/x
  3. Step 3: Cross multiply
    153,700.50x = 212,281.65 × 103,312.02
  4. Step 4: Simplify right side
    153,700.50x = 21,931,246,070.43
  5. Step 5: Solve for x
    x = 21,931,246,070.43/153,700.50
  6. Step 6: Final answer
    x = 142,688.19

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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.