Home / 102,642.60-141,709.32-70,430.14

Finding the Fourth Proportional to 102,642.60, 141,709.32 and 70,430.14

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Solution

The fourth proportional to 102,642.60, 141,709.32 and 70,430.14 is: 97,236.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,642.60 : 141,709.32 = 70,430.14 : x
  2. Step 2: Convert to fraction form
    102,642.60/141,709.32 = 70,430.14/x
  3. Step 3: Cross multiply
    102,642.60x = 141,709.32 × 70,430.14
  4. Step 4: Simplify right side
    102,642.60x = 9,980,606,186.21
  5. Step 5: Solve for x
    x = 9,980,606,186.21/102,642.60
  6. Step 6: Final answer
    x = 97,236.49

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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.