Home / 126,643,430.40-189,965,145.60-66,051,283.20

Finding the Fourth Proportional to 126,643,430.40, 189,965,145.60 and 66,051,283.20

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Solution

The fourth proportional to 126,643,430.40, 189,965,145.60 and 66,051,283.20 is: 99,076,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,643,430.40 : 189,965,145.60 = 66,051,283.20 : x
  2. Step 2: Convert to fraction form
    126,643,430.40/189,965,145.60 = 66,051,283.20/x
  3. Step 3: Cross multiply
    126,643,430.40x = 189,965,145.60 × 66,051,283.20
  4. Step 4: Simplify right side
    126,643,430.40x = 12,547,441,630,154,834
  5. Step 5: Solve for x
    x = 12,547,441,630,154,834/126,643,430.40
  6. Step 6: Final answer
    x = 99,076,924.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.