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Finding the Fourth Proportional to 157,210.10, 216,938.99 and 89,228.45

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Solution

The fourth proportional to 157,210.10, 216,938.99 and 89,228.45 is: 123,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,210.10 : 216,938.99 = 89,228.45 : x
  2. Step 2: Convert to fraction form
    157,210.10/216,938.99 = 89,228.45/x
  3. Step 3: Cross multiply
    157,210.10x = 216,938.99 × 89,228.45
  4. Step 4: Simplify right side
    157,210.10x = 19,357,130,085.77
  5. Step 5: Solve for x
    x = 19,357,130,085.77/157,210.10
  6. Step 6: Final answer
    x = 123,129.05

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1.5x scale

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.