Home / 115,041.28-158,756.64-64,740.32

Finding the Fourth Proportional to 115,041.28, 158,756.64 and 64,740.32

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Solution

The fourth proportional to 115,041.28, 158,756.64 and 64,740.32 is: 89,341.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,041.28 : 158,756.64 = 64,740.32 : x
  2. Step 2: Convert to fraction form
    115,041.28/158,756.64 = 64,740.32/x
  3. Step 3: Cross multiply
    115,041.28x = 158,756.64 × 64,740.32
  4. Step 4: Simplify right side
    115,041.28x = 10,277,955,675.72
  5. Step 5: Solve for x
    x = 10,277,955,675.72/115,041.28
  6. Step 6: Final answer
    x = 89,341.46

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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.